<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="app">
        <label for="mobile">
            <h1>{{mobile}}</h1>
            <!-- <input type="text" id="mobile" v-model="mobile"> -->
            <input type="text" v-bind:value="mobile" v-on:input="handleChange">
        </label>
    </div>
</body>
<script src="https://cn.vuejs.org/js/vue.js"></script>
<script>
    let vm = new Vue ({
        el:"#app",
        data:{
            mobile:"1348646515679"
        },
        methods:{
            handleChange:function(e){
                console.log(e.target.value);
                this.mobile = e.target.value;
            }
        },
    })

</script>
</html>